Highlights
Auth Bypass: 2 prior fixes. Scrutinize any change in this area.
app/(auth)/auth.ts: most-fixed (1 issue). Treat as high-risk during review.
4 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Auth Bypass: Authorization checks on the chat API route were historically bypassed because they were strictly limited to preview environments instead of being globally enforced. Developers must ensure that security middleware and session validation are applied uniformly across all environments.
Insecure Direct Object Reference (IDOR): The document API allowed unauthorized modifications due to a lack of ownership verification before saving updates. Any route handling document mutation or retrieval must explicitly validate that the authenticated session user owns the target resource.
Auth Bypass: A type mismatch (non-string comparisons) between the stored chat owner ID and the session user ID allowed potential bypasses in server actions. String casting or strict type normalization is required before performing equality checks.